systems, compilers, networking systems, performance monitoring software and utility programs. Applications software is what enables a user to do something specific with an ICT system, i.e., it allows you to do the things you want to do, whether that is designing a new product, organizing the day-to-day running of a company, or playing a computer game.


Unit 3, Lesson 2, Exercise E≤1.14


Part 4 So, to summarize, we can say that there are two types of ICT system: embedded and general purpose. ICT systems can also be defined by what they do, for example information storage and management systems, control systems and communications systems. Systems are composed of hardware and software. The hardware refers to the physical components of the system, while the software is the instructions which control what the computer does.


OK, that’s it for today. Next time we’ll look at how ICT systems work. Don’t forget to do a bit of research on that before you come. Thanks. See you soon.


Unit 3, Lesson 2, Exercise F≤1.15


1 Embedded systems are not expensive to produce.


2 You can add new hardware and software onto an embedded system.


3 ICT systems can perform more than one function.


4 A personal computer is an example of an embedded system.


5 ICT systems have two basic hardware components.


6 Operating systems are examples of applications software.


Unit 3, Lesson 3, Exercise A≤1.16 1 e'lectrical 2 'management 3 co'mmunicate 4 com'ponent 5 'storage 6 'binary 7 con'trol


118


8 infor'mation 9 em'bedded


10 'process 11 'database 12 'satellite 13 'automated 14 'function 15 'regulate 16 appli'cation 17 in'struction 18 'system


Unit 3, Lesson 4, Exercise C≤1.17


Part 1 OK. In the last lecture, we talked about different types of ICT systems, the functions of ICT systems, and the different parts that make up an ICT system, i.e., software and hardware.


Today we’re going to concentrate on what ICT systems do, and we can break this down into three stages: data capture, data processing and data output. But before we think about the different stages, it’s important that you understand the difference between data and information. Data is information that has no meaning or context. For example, if you see the numbers 281204 written in a line, what do they mean? Well, it could be an important date, a price or a product code. We have no idea unless we have a context. This is data. If I tell you that 281207 is your course number, you have a context, and the numbers become information. Alternatively, if there was a small space between each pair of numbers, this could be a date – the 28th December, 2007. And if there was another set of numbers in brackets in front of this string, we might assume that it is a telephone number. So we can say that data + context = information. Information is data which has meaning, something we can use.


Unit 3, Lesson 4, Exercise D≤1.18


Part 2 Right, let’s have a look at the first stage now – data capture. We can also call data capture data input. Input simply means putting data into a system. So how do we do this? Well, data can exist in a number of forms, but all data that is input


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